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I'm trying to do something that seems like it should be simple, but somehow won't tie up properly.
The user selects a date from a jquery datepicker, where I have showWeek enabled.
$(".datepicker").datepicker({
showWeek: true,
changeMonth: true,
changeYear: true,
dateFormat: 'yy-mm-dd'
});
But, when the resulting date string is fed into a php datetime, the week does not correspond, and is 1 week further into the future.
$start_date = isset($_POST['startdate']) ? $_POST['startdate'] : "";
$start = new DateTime($start_date);
echo $start->format("W");
IE, 2018-10-02 shows as week 39 in my datepicker, but the echo above from reading that date back into a datetime and formatting for week returns week 40.
So, as far as I can tell, the jquery datepicker and php datetime class do not agree on which weeks are which by default.
Is there a way to reconcile this?
The PHP date says it conforms to ISO-8601, Checking online confirms for me that php has it right, so how do I fix the datepicker to display correctly?
566
Ok here is the solution: according to jquery ui you need to specify the first day and in your code you are missing it:
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>jQuery UI Datepicker - Show week of the year</title>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<link rel="stylesheet" href="/resources/demos/style.css">
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<script>
$( function() {
$( "#datepicker" ).datepicker({
showWeek: true,
firstDay: 1,
changeMonth: true,
changeYear: true,
dateFormat: 'yy-mm-dd'
});
} );
</script>
</head>
<body>
<p>Date: <input type="text" id="datepicker"></p>
</body>Just add firstDay: 1, and everything works as you expect.
116
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